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d977f4377f
We do not support host-level reservations for the pscsi backend, and all virtual backends are newere than SCSI-2, so just make the combined SPC-3 + SCSI-2 support the only supported variant and kill the switches for the different implementations, given that this code handles the no-op version just fine. (hch: Update DRF_SPC2_RESERVATIONS lock usage) Signed-off-by: Christoph Hellwig <hch@lst.de>